/**
 * Copyright 2009 Takahiko Ito
 *
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.unigram.oluolu.rqe.selector;

/**
 *
 */
public interface ISelector {
    /**
     * Validate the pair of queries (target and candidate) 
     * should be extracted or not.
     *
     * @param target query string
     * @param candidate query string which sent
     *                   immediately after target query.
     * @return true when the pair are related to each other
     */
    boolean run(String target, String candidate);
}
